“…Iron(III) hexacyanoferrate(II) is the first model of transition metal cyanoferrate (commonly known as Prussian Blue (PB)) that reported by Neff in 1978 [24]. The preparation and electrochemical behavior of some PB analogue modified electrodes have been reported based on different transition metal hexacyanoferrate such as chromium [25], nickel [26], cobalt [27,28], copper [29,30], palladium [31,32], molybdenum [33], vanadium [34], platinum [35], cadmium [36], and zinc [37]. Pentacyanonitrosylferrate (PCNF) is a member of the polycyanide metal complexing reagents that referred to as nitroprusside (NP).…”